Port F0/0 protocol down on Router 1841?

[rechard_hk]

Dear All,

I have issue on Cisco Router 1841 on port F0/0 is protocol down

Router#sh ip int br

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            unassigned      YES unset  up                    down   

FastEthernet0/1            unassigned      YES unset  up                    up   

And i try to no shut on port F0/0 but it still donw and  FDX,100 and Link don't have light.

i trty to change cable stragth and cross already but it still down, How can we know this port spoil?

Best Regards,

Rechard

[Sandeep Choudhary]

Hi Rechard,

Check

1) Cabling - use a cable that is known to be working

2) Duplex - either Auto/Auto on both sides or hard coded for speed and duplex

3) IOS - are you using a stable IOS?

4) Change the device it is connected to on the other end to see if there is any change

Specially configure these :

Duplex full
Speed 100

Duplex half
Speed 10

Duplex half
Speed 100

Double full
Speed 10

Try this able Combination and let me know.

Please rate, if it helps.

Regards

[rechard_hk]

Dear Sir,

I tasted already but it still problem:

1) Cabling - use a cable that is known to be working

    The cable is working, if i connect this to port 0/1 is working.

2) Duplex - either Auto/Auto on both sides or hard coded for speed and duplex

    i try to change Auto/Auto or halft , speed 100 or speed 10 but it still down.

3) IOS - are you using a stable IOS?

  This IOS that i use :  advipservicesk9-mz.124-9.T3

4) Change the device it is connected to on the other end to see if there is any change

  I connected from My PC to Cisco Router .

Best Regards,

Rehcard

[Sandeep Choudhary]

can you put your config from the router of the interface fa0/0 and the config from the other side where its is connected???

may be its a problem of trunking protocol.

REgards

[rechard_hk]

Dear Sir,

This config that i done :

interface FastEthernet0/0

ip address 192.168.7.4 255.255.255.0

speed 100

full-duplex

!

Router#sh ip int br

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            192.168.7.4     YES manual up                    down   

FastEthernet0/1            unassigned      YES NVRAM  up                    down   

Router#

Now port F0/0 connecting to other devide.

it still down, how can we know this port spoil or problem? i think may be it hardware (port f0/0) but i dont reference for this port spoil or not....

Best Regards,

Rechard

[Sandeep Choudhary]

can you give me the out put of this coomand on router: sh interface fa0/0

and other output from the other device where this interface connected:sh int _

Regards

[rechard_hk]

Dear Sir,

Router#sh int f0/0

FastEthernet0/0 is up, line protocol is down

  Hardware is Gt96k FE, address is 64a0.e7e3.a38e (bia 64a0.e7e3.a38e)

  Internet address is 192.168.7.4/24

  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 100Mb/s, 100BaseTX/FX

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog

     0 input packets with dribble condition detected

     127 packets output, 8547 bytes, 0 underruns

     0 output errors, 0 collisions, 2 interface resets

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier

     0 output buffer failures, 0 output buffers swapped out

[Sandeep Choudhary]

where this port connected -....to .....-------------------------> pc

                                                    ..........................> switch ?

Regards

[rechard_hk]

Dear Sir,

I test only one port, i mean port f0/0 connect to PC, and also i connect port f0/0 to switch ( normal switch and not cisco)

and it still not work.

Best Regards,

Rechard

[Sandeep Choudhary]

Hi ,

Just try

1. use  new crossover cable to connect to pc or switch.

2. if you are conneting with switch then please check the port setting on switch: should be Full-duplex, 100Mb/s.

3. if you are connecting with a pc then please go and check the NIC setting:

NIC SETTING. my computer properties>hardware>device manager>network adaptor properties>link speed duplex mode should be full and speed 100Mbs.

Regards

rate it if it helps.